Description
Off Axis H-Alpha Prominence Filter System fits 8 13/16” to 9 3/8”
Your O.D. Measurement: 8 13/16” (224mm) to 9 3/8” (236mm)
ERF Aperture: 3.00”
Off Axis H-Alpha Prominence Filter System ST9312ERFOA
$1,299.00
Your O.D. Measurement: 8 13/16” (224mm) to 9 3/8” (236mm)
ERF Aperture: 3.00”
System does not work for Newtonian reflectors the focus travel is to limited. (Focus is extended out 3 1/8’’) with the minimum is f/15 cannot be achieved. Spectrum Telescope does not offer a system for Newtonian reflectors.
Out of stock
Additional information
| Weight | 4 lbs |
|---|---|
| Dimensions | 18 × 18 × 4 in |
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